<template>
  <div id="app">
      <div id="nav">
        <router-link to="/add">添加数据</router-link> |
        <router-link to="/table">数据管理</router-link> |
        <router-link to="/pie">饼图</router-link> |
        <router-link to="/about">柱状图</router-link>
      </div>
      <div style="border:0px solid red;width: 800px;height: 600px;margin-left: 116px;">
        <router-view/>
      </div>
    </div>
</template>

<style>
#app {
  font-family: 'Avenir', Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-top: 60px;
}
</style>
